Sechtae

D. A. Binchy argued the permissive divorce law described in Heptad III was suggestive of a lay author.

These heptads cover an unusually broad range of legal subject matter.

[3]: 57 Groups of three (triads) and of seven (heptads) are common in Irish legal texts.

[4]: 291–292  Kelly proposes a Christian origin for the heptad, given the signifance attached to the number in Jewish and Greek traditions.

[6]: 33 Scholars have discussed various heptads individually in order to clarify features of early Irish law.